Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun cambrian_period

1 sense of cambrian period

Sense 1
Cambrian, Cambrian period -- (from 544 million to about 500 million years ago; marine invertebrates)
       INSTANCE OF=> period, geological period -- (a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods")